The layoffs come shortly after Microsoft offloaded its maps business and its display advertising business.

So has Microsoft finished cleaning house or is the company likely to exit more businesses as part of its "focusing and aligning" mission?

A close look at Microsoft's sprawling empire shows other lagging businesses that probably don't fit in with the company's new productivity-first mission statement and might benefit from a sale, spin-off, or shutdown. Here are some of the main ones:

Dynamics CRM: Another place where Microsoft is an also-ran. Customer relationship management (CRM) is a hot market, with $14 billion in global revenues in 2014.

But a Gartner report places Salesforce as the market leader with 18.6% market share, followed by SAP at 12.1% and Oracle at 9.1%. Dynamics is fourth with 6.2%. Given its lagging position, and the fact that it doesn't really fit into the productivity-first, developer-first world envisioned by Microsoft, it might be time to rethink where Dynamics fits in.

Sure, the most recent Surface results predate the launch of the new, critically-acclaimed Microsoft Surface 3 tablet, but it's hard to see Microsoft taking the lead in this market. Maybe so long as it's streamlining its phone business, it's time for Microsoft to reconsider if it wants to be in hardware at all — especially since it doesn't quite jibe with that big productivity push.

Microsoft Xbox: At this year's E3 2015 video game event, the Microsoft Xbox One made some big announcements that spurred a lot of interest. And sooner or later, Microsoft is going to bring Windows 10 to the Xbox One, making it easier than ever to bring games and apps to the console.

Microsoft Bing: Thanks to a series of strategic partnerships with companies like Yahoo, Bing's marketshare is on the rise, recently. hitting 20% in the US for the first time ever. But it's still way behind Google in marketshare and advertising revenue. In the wake of Microsoft's big changes to its display advertising business, it might be time to finally exit the search market.

Microsoft is a big company, with some of the smartest people in the world working for it. It's always tough to make big changes — especially with 7,800 jobs on the line, as in the case with the Nokia write-off. But it's also true that Microsoft and its new developer-first approach could benefit from reallocating its resources.